Flask pin



Patented Apr. 28, 1925.`

REINHOLD KOENKE, YOl MILWAUKEE, WISCONSIN.

FLASK PIN.

Application 'filed March 17, 1924.

To all whom t may concern.'

Be it known that I, RinNHoLn KonNKn, a citizen ofthe United States, and resident of Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented certain new and useful lmj'irovements in Flask Pins; and l do hereby declare that the following is a full, clear, and exact description thereof.V y

This invention relates to molding flasks, and is particularly directed to flask pins.

ln molding flasks a considerable loss both of material and time has been experienced due to the breaking ofl'j of the centering pins or dowel' pins. These pins have been made integral with a bracket rigidly attached to one of the members, for instance, the drag, and adapted to be received in apertures formed in a bracket carried by the cope. When these flasks are separated and emptied they are handled very roughly and the pins are frequently broken oili or distorted thus occasioning 'considerable loss of time and material.

This invention is designed to overcome the above noted detects, and objects of such invention are to provide dowel pins for flasks which are removable and are, therefore, not subjected to the stresses ordinarily imposed upon the dowel pins of flasks.

Further objects are to provide flasks with dowel pins so organized that they will take up the wear and insure exact alignment ot Vthe cope and drag, which may be readily appliechwhich may be securely attached, and which may be readily removed. v

An embodiment of-the invention is shown in the accompanying drawings, in which Figure l is a longitudinal sectional view through a flask equipped with a dowel pin, such view corresponding to a section on the line 1--1 of Figure Q..

Figure 2 is a plan view of the structure shown in Figure l.

Figure 3 is an end view-of the structure shown in Figure l.

In practising this invention, one of the members, for instance the drag l is provided with a bracket 2 having` a downwardly7 extending arm 3, and an inwardly extending arm 4 rigidly secured to the drag. rlhe bracket 2 projects outwardly from the drag and is provided with a slot 5. A corresponding bracket 6 is secured to the cope 7 Serial No. 699,822.

and is also provided with the arms 8 and S) secured to the cope by spaced counter sunk screws in the preferred form. This bracket 6 is provided with a slot l0 of greater width lthan the slot 5 as ma f be seen from FiO-ure 2. It is also to be noted that the slot extends iuwardly a greater distance than the slot 10.

The removable dowel pin comprises a cylindrical body portion ll preferably provided with a tapered upper end 12 and provided with a threaded downwardly extending shank 13 of such size as toV pass through the slot 5. A wing nut la is screwed upon the shank 13 and, when the pin is in position, clamps such pin to the lower bracket Q. As shown in Figure l, the other side of the flask may be' provided with any suitable type of interengaging fastening means such for instance as the brackets l5 and 16 and the removable, headed pin l?. It is, however, to be distinctly understood that, if desired, a construction similar to that iirst described, nay be provided on this end of the flask a so.

In using the dowel pins, they are adjusted inwardly until the cylindrical portions ll abut the inner ends of the slots l0. Thereafter, the wing nuts are tightened and the pins lockedin position. It will be seen, therefore, that as the slots 10, in the flasks, wear inwardly that the pins may be shifted inwardly, and may be clamped in their new adjusted position, thus taking up the wear` After the pins have been used they may be removed and the flasks may, thereatter, be separated and emptied without danger ot' damage to such pins.

It will thus be seen that dowel pins have been provided which are not subjected to the rough usage ordinarily imposed upon such pins, which are removable, and'which are adjustable to compensate for wear.

Although the invention has been described in considerable detail, it is to be understood that thev invention may be variously embodied andis, therefore, to be limited only as claimed.

I claim:

The combination of a flask composed of other member, dowel pinscooperating with tioued in the narrow slot, and a clamping nut threaded upon said reduced portion.

n testimony that I claim the foregoing have hereunto set my hand at /Iihvaukee, in the county or" Milwaukee and State of Tisconsin REINHOLD KOEY K ii. 

